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Preparation method of doped bismuth ferrite-barium titanate leadless piezoelectric ceramic material
The invention discloses a preparation method of a doped bismuth ferrite-barium titanate leadless piezoelectric ceramic material, which belongs to the field of leadless piezoelectric ceramic materials.The preparation method comprises the following steps: calculating the mass of each raw material according to a chemical formula (1-x)Bi(1-y)MyFe(1-z)NzO3-xBaTiO3, accurately weighing, putting the weighed raw materials into a planetary ball mill for ball milling and mixing, and putting the mixed raw materials into a drying box for drying to obtain dry powder; adding polyvinyl alcohol (PVA) with the concentration of 2wt% into the dry powder, then fully grinding and granulating, weighing 0.3-0.4 g of granulated powder, putting the granulated powder into a metal mold with the diameter of 10mm, and carrying out compression molding by using a manual tablet press so as to obtain a ceramic green body; and putting the ceramic blank into a muffle furnace, heating to 300-600 DEG C, keeping the temperature for 1-2 hours, discharging glue, then heating to 700-850 DEG C, keeping the temperature for 1-3 hours, and finally sintering at 950-1000 DEG C for 6-12 hours to prepare the required ceramic. The (1-x)Bi(1-y)MyFe(1-z)NzO3-xBaTiO3 ceramic is prepared through one-step roasting and sintering, and the prepared ceramic material is a perovskite phase, has no impure phase, has excellent electricalproperties and high Curie temperature, and is stable in preparation process.
一种掺杂型铁酸铋‑钛酸钡无铅压电陶瓷材料的制备方法，属于无铅压电陶瓷材料领域。所述制备方法按化学式(1‑x)BiMFeNO‑xBaTiO计算各原料的质量并准确称量，将称好的原料置于行星式球磨机中进行球磨混料，将混合后的原料放置于干燥箱内烘干，获得干燥粉。在干燥粉中加入浓度为2wt％的聚乙烯醇(PVA)后充分研磨造粒，称量0.3～0.4g造粒粉料放入直径为10mm的金属模具中，用手动压片机压制成型，获得陶瓷坯体。将陶瓷坯体置于马弗炉中，升温至在300～600℃，并保温1～2h，进行排胶，然后升温至700～850℃，保温1～3h，最后在950～1000℃下烧结6～12h，制备所需陶瓷。本发明一步焙烧、烧结制备(1‑x)BiMFeNO‑xBaTiO陶瓷，所制备的陶瓷材料为钙钛矿相，无杂相，且具有优良的电学性能和较高的居里温度，其制备工艺稳定。
Preparation method of doped bismuth ferrite-barium titanate leadless piezoelectric ceramic material
The invention discloses a preparation method of a doped bismuth ferrite-barium titanate leadless piezoelectric ceramic material, which belongs to the field of leadless piezoelectric ceramic materials.The preparation method comprises the following steps: calculating the mass of each raw material according to a chemical formula (1-x)Bi(1-y)MyFe(1-z)NzO3-xBaTiO3, accurately weighing, putting the weighed raw materials into a planetary ball mill for ball milling and mixing, and putting the mixed raw materials into a drying box for drying to obtain dry powder; adding polyvinyl alcohol (PVA) with the concentration of 2wt% into the dry powder, then fully grinding and granulating, weighing 0.3-0.4 g of granulated powder, putting the granulated powder into a metal mold with the diameter of 10mm, and carrying out compression molding by using a manual tablet press so as to obtain a ceramic green body; and putting the ceramic blank into a muffle furnace, heating to 300-600 DEG C, keeping the temperature for 1-2 hours, discharging glue, then heating to 700-850 DEG C, keeping the temperature for 1-3 hours, and finally sintering at 950-1000 DEG C for 6-12 hours to prepare the required ceramic. The (1-x)Bi(1-y)MyFe(1-z)NzO3-xBaTiO3 ceramic is prepared through one-step roasting and sintering, and the prepared ceramic material is a perovskite phase, has no impure phase, has excellent electricalproperties and high Curie temperature, and is stable in preparation process.
一种掺杂型铁酸铋‑钛酸钡无铅压电陶瓷材料的制备方法，属于无铅压电陶瓷材料领域。所述制备方法按化学式(1‑x)BiMFeNO‑xBaTiO计算各原料的质量并准确称量，将称好的原料置于行星式球磨机中进行球磨混料，将混合后的原料放置于干燥箱内烘干，获得干燥粉。在干燥粉中加入浓度为2wt％的聚乙烯醇(PVA)后充分研磨造粒，称量0.3～0.4g造粒粉料放入直径为10mm的金属模具中，用手动压片机压制成型，获得陶瓷坯体。将陶瓷坯体置于马弗炉中，升温至在300～600℃，并保温1～2h，进行排胶，然后升温至700～850℃，保温1～3h，最后在950～1000℃下烧结6～12h，制备所需陶瓷。本发明一步焙烧、烧结制备(1‑x)BiMFeNO‑xBaTiO陶瓷，所制备的陶瓷材料为钙钛矿相，无杂相，且具有优良的电学性能和较高的居里温度，其制备工艺稳定。
Preparation method of doped bismuth ferrite-barium titanate leadless piezoelectric ceramic material
一种掺杂型铁酸铋-钛酸钡无铅压电陶瓷材料的制备方法
ZHANG BOPING (author) / TANG YUCHENG (author)
2020-06-23
Patent
Electronic Resource
Chinese
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